Evidence theory-based reliability optimization for cross-scale topological structures with global stress, local displacement, and micro-manufacturing constraints

An uncertainty-oriented cross-scale topology optimization model with global stress reliability constraint, local displacement and micro-manufacturing control based on evidence theory is presented. The oriented to two-dimensional porous material structure, which concurrently designs the distribution of both macrostructure cell microstructure. During process, homogenization method used solve equivalent elastic modulus microstructure, then endowed macro-elements for subsequent analysis. constraints are converted a constraint by P-norm reduce computational consumption. Considering uncertainty factors, utilized process parameters evaluate structural strength performance. Minimum length-scale imposed microstructure density projection better manufacturability. Three numerical examples presented illustrate availability proposed model.